72715124443 has 4 divisors (see below), whose sum is σ = 78308595568. Its totient is φ = 67121653320.

The previous prime is 72715124431. The next prime is 72715124497. The reversal of 72715124443 is 34442151727.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72715124443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72715124396 and 72715124405.

It is not an unprimeable number, because it can be changed into a prime (72715124423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2796735543 + ... + 2796735568.

It is an arithmetic number, because the mean of its divisors is an integer number (19577148892).

Almost surely, 2^72715124443 is an apocalyptic number.

72715124443 is a deficient number, since it is larger than the sum of its proper divisors (5593471125).

72715124443 is a wasteful number, since it uses less digits than its factorization.

72715124443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5593471124.

The product of its digits is 188160, while the sum is 40.

The spelling of 72715124443 in words is "seventy-two billion, seven hundred fifteen million, one hundred twenty-four thousand, four hundred forty-three".